Does Rebirth happens?

Does Rebirth happens?

Hello friends how are you , i am hoping that you are good.
Here we are talking about rebirth, let's think are we able to remember our previous birth . No one in this world know about the previous life .You may face many people who are very much sure about  rebirth . I am  confuse about the facts, as i said we can only discuss it and understand it .
Have you ever realize that how much problems we have for this life , we have tension of Jobs , relative , family and need to settle a lot of things like loan of banks, EMI etc.
Now just think ,what will happen if we will be able to see our  previous birth also .We will see some one have did some wrong with you have to take revenge of that , your children of previous birth are struggling.
Some one destroyed how previous birth house.
Now you will die ,if you will able to see your past 2-3 birth.
You will see so many unfulfilling desires.
Almost every one believe that there is rebirth but it does not matter what all believes , truth will be always truth .
Why i am saying this, about 100 years ago all believe that sun revolve around earth.
 But now we all know earth revolve around sun.
But there is a good thing also , if people believe that there will be rebirth and that rebirth is totally depends on the karma of the current birth , so people will follow humanism.

Now , if you are expecting from me to get direct answer if rebirth happens or not , so my simple answer is we need to understand that there are few things which doctors and scientists are still not able to figure out , like once heart stop working it is impossible to restart it again , which show that there was something which exited from the body which  science can not create .
So ,it may be possible that after many years this mystery will also solved, till that time we have to believe that there is  something which exited and will enter somewhere.